SAN MATEO — A falcon that was found near San Francisco International Airport in July was released this week from the Peninsula Humane Society and SPCA facility following a successful feather implant procedure, officials said.

The peregrine falcon was found grounded near SFO by a passerby in obvious need of care on July 31 and the humane society determined the bird suffered mild head trauma, officials said.

Humane society workers provided stabilizing care and anti-inflammatory medication to the falcon. The bird lost some of its flight feathers, and the humane society called in help to care for the falcon, which needed an imp procedure to attach feathers, according to officials.

Seven new feathers were added and the procedure took less than 30 minutes. The falcon had excellent flight skills upon being released Thursday, officials said.